RL10/RL11/RL120 pages

C-mac

®

Level relays RL10, RL11 and RL12

RL10: Universal relay for filling or emptying
RL11: Level relay for emptying
RL12: Level relay for filling
1 or 2 sensor levels
Adjustable sensitivity
1- or 2-pole relay output
DC supply (RL10 only) or AC supply up to 230 VAC
Made in accordance with the
and EMC regulations
C-mac® level relays, series RL, are made for monitoring
and control of the level in conductive liquids. The level is
monitored by 1 or 2 electrodes in the liquid.
RL10 is supplied with internal oscillator for the signal to
the electrodes, which means the module can be used for
both AC and DC supply, and furthermore it is possible to
adjust the unit to a very high sensitivity, which means it
can be used for very clean liquids, i.e. liquids with low
conductivity.
RL11 and RL12 use the frequency of the supply voltage
to generate the signal for the electrodes, therefore these
units are only available for AC supply, and the sensitivity
is not so high as the RL10.
RL11 and RL12 are available with either adjustable or
fixed sensitivity.
Common technical data:
Supply, AC:
Supply frequency:
Variable supply:
Isolation voltage:
Supply voltage, DC:

Optional:

Power consumption:
Operation temp.:
Humidity:
Sensor signal:
RL10:
RL11 and RL12:
Sensor cable:
Adjustments:
Indications:
Green LED:
Red LED:

24, 115 and 230 VAC +/- 10%
40-70 Hz
12-50 or 48-250 VDC (RL10 only)
Supply - input - output: 3.75 kV
24 VDC +/- 10% (RL10 only)
Note: With this DC-supply there
is no isolation between supply and
internal electronics.
12-50 VDC with internal DC/DC
converter and galvanic isolation
between supply and internal circuits.
2,5 VA
-20°C to +60°C
0 - 90% RH, non-condensing

Sensitivity:
module
type

function
filling

RL10
emptying

RL11

emptying

RL11F

emptying

RL12

filling

RL12F

filling

potentiometer

relay
activates

relay
releases

min.

> 18 kW

< 9 kW

max.

> 100 kW

< 66 kW

min.

< 9 kW

> 18 kW

max.

< 66 kW

> 100 kW

min.

< 3,5 kW

> 8 kW

max.

< 25 kW

> 45 kW

-

< 25 kW

> 35 kW

min.

> 8 kW

< 3,5 kW

max.

> 45 kW

< 25 kW

-

> 35 kW

< 25 kW

RL10 is a universal relay, with a 3-bit dipswitch in the buttom
of the relay, where you can select the function:
Filling:
switch 1 ON
switch 2 OFF switch 3 ON
Emptying: switch 1 OFF switch 2 ON switch 3 OFF
Max. load, relay:

1-pole: 8 A - 250 VAC
2-pole: 5 A - 250 VAC,
ohmic load

EMC and safety regulations.
Emmision:
EN 50 081 - 1
Immunity:
EN 50 082 - 2
Safety:
EN 60 730
Approvals: The units are produced in accordance with the
CE og low voltage regulations.

8 VAC / 70 Hz, max 1 mA
8 VAC, max 1 mA
Standard 2- or 3-wire cable
max. 100 m.
Potentiometer, scale 1 to 10
(RL11F and RL12F: no adjustment)
Supply voltage connected
Relay active

Comadan
Produktion a/s

7-1